Features: brand new and high quality USB Bluetooth-compatible Adapter with advanced Bluetooth-compatible 5.0 technologies, your USB audio transmitter is backward for Bluetooth-compatible 4.2/4.0/3.0/2.0 and it can deliver more stable wireless to your devices. Widely used for computers, laptops, , X BOX, Switch, etc., and then transmit H D sound quality to Bluetooth-compatible headsets and Bluetooth-compatible speakers. Let you enjoy the wireless H D music experience. Driver free, no need to download and manually install any drivers, just plug and for play. (Driver free for windows XP, 7,10 ,macOS, Linux) Support APTX low latency+aptX H D technologies deliver up to 80% lower latency and transmit H D sound quality. Bluetooth-compatible audio transmitter with maximum range reach up to 30ft-60ft(10m-20m) line of sight. Specifications: Bluetooth-compatible Version: 5.1 Supported Protocols: A2dp1.3, Hfp1.6 Transmit Power: Class1.5 Supported Audio Protocols: Sbc Operation Range: Up to 15m / 49ft (without any blocking objects) Transmit Power； Maximum 8dbm Receive Sensitivity： -90dbm Working Frequency：2.402ghz-2.48ghz Dimensions:Mixed Package Includes: 1 PC x USB Audio Adapter note: professional audio transmitter, only supports Audio Devices, NOT support the connection of mouse, keyboard, game controllers or data transfer. There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions.